Thread: What components are required to go 50/34, 52/36, 53/39 ?
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Old 06-01-18, 05:13 PM
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spdntrxi
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50/34 and 52/36 are usuallly 110bcd while 53/39 is 130bcd... atleast on the brands I am familiar with so you cannot mix the rings and arms obviously.
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